118805857129 has 2 divisors, whose sum is σ = 118805857130. Its totient is φ = 118805857128.

The previous prime is 118805857103. The next prime is 118805857139. The reversal of 118805857129 is 921758508811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118578299904 + 227557225 = 344352^2 + 15085^2 .

It is a cyclic number.

It is not a de Polignac number, because 118805857129 - 2¹¹ = 118805855081 is a prime.

It is a super-2 number, since 2×118805857129² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 118805857129.

It is not a weakly prime, because it can be changed into another prime (118805857139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59402928564 + 59402928565.

It is an arithmetic number, because the mean of its divisors is an integer number (59402928565).

Almost surely, 2^118805857129 is an apocalyptic number.

It is an amenable number.

118805857129 is a deficient number, since it is larger than the sum of its proper divisors (1).

118805857129 is an equidigital number, since it uses as much as digits as its factorization.

118805857129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 55.

The spelling of 118805857129 in words is "one hundred eighteen billion, eight hundred five million, eight hundred fifty-seven thousand, one hundred twenty-nine".